of richmond



W. W. WAIT.

.N4 PETERS, Pham-Lithograph", wnsmngmn, D. C.

-at its lowest point.

ttitittl gieten @tithe @sind W.' WAI'IHOF RICHMOND, INDIANA.

Letters Patent No. 88,241,..1ated Ma/rch 23, 1869.

IMPROVEMENT IN FAN'NING-MILL.

The Schedule referred te in these Letters Patent-and making part of thenme.

To all whom it rfm1/ 1] concern I v Be it known that I, W. W. WAIT, ofthecity of Richmond, and State of Indiana, have invented new and usefulImprovements in Fanning-Mills; and I do hereby declare that thefollowing is a full and exact description thereof, reference beinghad-to the accompanying drawings, making a part of this specification,in which- Figure 1 is a transverse section,

Figure -2, a longitudinal section, and

Figure 3, a plan view of the shoe.

The same letters in'the different figures relate to corresponding partsof the mill. My invention comprises three particulars in theconstruction of tanning-mills, one of which consists inthe arrangementand operation of a jarring-lever bywhich the lower screen of the millreceives a motion at its lower end independently vof the motion of theshoe.

A second improvement relates to an eccentric situated on the fan-shaft,from which the'shoe receives one Aof its motions. The other improvementrelates to a pe-` euliar construction of a grain-board, over which thegrain hows from the hopper to the screens.

To enable others skilled in the art to make and use my invention, I willproceed to describe the same with reference to the drawings.

The peculiarity of the lever a, iig. 1, as applied to fannng-mills,consists in its operation on a fulcrumpin, and in the manner ofchanging'the fulcrum, so that the lowest point in the stroke of .thejarring-end ofthe lever will be the same when the fulcrum is atVdifferent points along the lever, by means of which the screen is'always in contact with said lever, and knocking together of the. two isthus prevented.

The lever cis attached to the 'cross-piece' D bythe holes for acorresponding purpose in the cross-piece v D are arranged on a parallelline to lever a, when the latter is in a position with the end beneaththe screen Thus the motion of that end of the lever is always from agiven point upward.

fr is a plate supporting pin G', which plate is held by another pin, forthe accommodation 'of whichl latter, a row of holes is provided incrossfpiece D, parallel to the holes for pin C. I

g represents the lower screen, the lower end of which rests on the endof the upright section of lever c, and extends over-the board It", bywhich the grain is carried down and discharged in front of the mill.

The upper end of screen g is supported on pivots attached to its sides,and resting in notched plates t at each side of the shoe. Said screenthus has Vthe combined motions of the shoe and of the lever a i111-parted to it.

b represents theA eccentric situated on the fan-shaft J, by which therod c, shown in iig. 2, is actuated.

The latter has a bearing, n, attached to 'the side of the mill, on theinside, in which it slides, and is connected with the shoe bymeans of a.link,- c, attached to'said shoe in a flexible manner. The shoe issuspended at the rear by rods in the usual manner. v

Itsfront end is supported by an arm, u., shown figs. 2 and 3, having aslotted plate, s, at its end, which latter is pivoted on a pin inserted.vertically through cross-piece B, the plate s being held in a mortise onthe under side of said cross-piece. y

The shoe is thus susceptible of a circular` motion,

which is imparted 'to it by the combined action of theA bell-crank andeccentric b, the former of which operates as in ordinary mills, andtends to shake the shoe ina transverse direction, while thefaction ofthe eccentric'isin a longitudinal direction.

I, shown. in g's. 2 and 3, represents the improved grainboard for use infurther cleaning after the chad has been separated from the grain, whichis held'in the upper grooves of the shoe, and over which the grainpasses from the hopper to the screens.

My improvement in said board consists in forming divergent channels, asshown in lig.- 3, by means of partition-strips t t, 85e., on whichlatter is another,

narrower board I', shown in iig. 2, the purpose of said improvementbeing to regulate and prevent an excessive vquantity of grain4 frompassing over said board,

and, by means of the diverging channels, to deliver the ,l grain. evenlyto the screens.

When the mill is used for separating the chaff from the grain, board Iis reversed, with its underside (which is plain,) upward.

, Having thus fully described my said invention, :What -I claim, anddesire to secure by Letters Patent, isl 41. 'lhe lever a, operating on afulcrum-pin, and so arranged that the latter may be changed to differentpoint-s for the purpose of increasing or diminishing the action of saidlever on the screen, without changing .the` lowest point in the leversmotion, substantially as set forth.

2. The eccentric b'on the fan-shaft J, and rods c and e, for thepurpose'of giving an end shake to the shoe, substantially as set forth.

3. The grain-board I, provided with the divergent partitions, and theboard I', as set forth, and for the purpose described.

W. W. WAIT.

Witnesses:

JOSEPH RIDGE, J. A. McMnAns.

